The global mountaineering and steep skiing communities are mourning the loss of Guillaume “Gee” Pierrel, who died following a devastating avalanche on K6 (7,282 m) in Pakistan’s Karakoram Range Wednesday morning, June 24. According to preliminary reports from local Hushe Valley authorities, the 40-year-old French mountain guide and extreme skier was caught by a sudden slide of snow and rock during an alpine ascent. Pierrel was climbing alongside his frequent expedition partner, elite Canadian skier Christina Lustenberger, and fellow French guide Boris Langenstein, both of whom survived the incident.
Chamonix local Pierrel was widely revered as one of the most visionary and daring steep skiers of his generation, seamlessly blending high-altitude alpinism with technical, high-consequence descents. His resume includes a stunning ski descent of Gasherbrum II in 2021, as well as historic first descents on iconic faces worldwide—including Mount Cook in New Zealand and a groundbreaking descent of Mount Robson’s south face in the Canadian Rockies alongside Lustenberger. Closer to his home in the European Alps, he astounded the community with radical lines down the North Face of the Drus and the Grandes Jorasses.
As news of the tragedy ripples through Chamonix and the wider mountaineering world, friends and peers are remembering Pierrel not just for his staggering athletic feats, but for his humility and deep connection to the mountains. Ross Hewitt, IFMGA Chamonix Mountain Guide, legendary steep skier, and friend of Pierrel told SnowBrains via text message:
“Gee was a charismatic Frenchman with an opportunistic eye and a cheeky grin that showed off his stoke for life. I had the pleasure of sharing some major descents with this young man including the Peuterey Ridge and Syme Ridge in Tasman in NZ. Sorely missed, never forgotten.”
Local rescue teams and volunteers in Pakistan have been dispatched to assist at the site. The loss leaves a monumental void in the tight-knit community of extreme alpinists who push the absolute limits of what is possible on skis.
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To remember his incredible vision and fluid style in the high peaks, you can watch this footage showcasing Guillaume Pierrel & Christina Lustenberger skiing an epic line at Aoraki/Mount Cook, which captured the sheer adrenaline and mountain magic he brought to the sport.